Definition: Grease steel mesh oil★β separation refers to the tendency♣¥ of base oil to separate ∏✔>♠from grease under heated✘<∞ conditions, indicating the δ<>quality of the grease’s coll☆oidal stability when subjected to★§×£ heat. ① Steel mesh oil separation <$¥is an important indicator of coll©oidal stability, whi↔✔$ch can predict changes in the struct♦<>ural framework of grea✔↕♦se under…
Definition: Grease volatility (ev £aporation loss) refers to the d β↔egree of evaporation loss of base ¶¥oil in grease under hφ≥☆®igh-temperature conditions. ©① The smaller the evaporatiΩ&on loss, the better ↕€∏the high-temperature pβ"÷εerformance of the grease.$✘π™ ② Grease evaporation loss depend©↔Ωs on the type, properties, and distil€&lation composition of the bas¶&✔e oil used in the grease↔♥±₽. ③…
Definition: Penetrati≈♣on refers to the depth, in units δα¥of 0.1 mm, that a standard cone fr®≤eely falls and penetrates into grease×≤₹→ contained in a standard cup witσαhin 5 seconds. Penetratioδ♣γ≠n indicates the consis<★§tency or the degree of soft€δness/hardness of the g£♣¶rease. S☆σtandard Cone Sizes for Penetr☆ ation Testing: Full-size ≠®↔ cone penetration 1/2 cone pe&δ← netration…
Definition: The dropping point of g® rease is the temperature,∑©Ω expressed in degrees, at which the fiα∞✘rst drop of grease sa±<αmple drips from the grease cup in a dro>®δεpping point apparatus. This temper ☆βature is known as the droppin¥πg point of the grease. ∑ Key Points: ① The dropping po↔€int is an indicator of the thermal&he✘llip;
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